Effect of edge turbulent transport on scrape-off layer width on HL-2A tokamak

Ting WU (吴婷); Min XU (许敏); Lin NIE (聂林); Yi YU (余羿); Jianqiang XU (许健强); Ting LONG (龙婷); Yu HE (何钰); Jun CHENG (程钧); Longwen YAN (严龙文); Zhihui HUANG (黄治辉); Rui KE (柯锐); Peng SHI (石鹏); Shuo WANG (王硕); Bing LIU (刘兵)

doi:10.1088/2058-6272/abd6b7

Plasma Science and Technology > 2021 > 23(2): 25101-025101. > DOI: 10.1088/2058-6272/abd6b7

Ting WU (吴婷), Min XU (许敏), Lin NIE (聂林), Yi YU (余羿), Jianqiang XU (许健强), Ting LONG (龙婷), Yu HE (何钰), Jun CHENG (程钧), Longwen YAN (严龙文), Zhihui HUANG (黄治辉), Rui KE (柯锐), Peng SHI (石鹏), Shuo WANG (王硕), Bing LIU (刘兵). Effect of edge turbulent transport on scrape-off layer width on HL-2A tokamak[J]. Plasma Science and Technology, 2021, 23(2): 25101-025101. DOI: 10.1088/2058-6272/abd6b7

Citation:

PDF (989 KB)

Effect of edge turbulent transport on scrape-off layer width on HL-2A tokamak

¹ Southwestern Institute of Physics, Chengdu 610041, People's Republic of China
² School of Physics, University of Science and Technology of China, Hefei 230026, People's Republic of China
³ Institute of Fusion Science, School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, People's Republic of China

Funds: This work is supported by National Natural Science Foundation of China (Nos. 11875124, U1867222, 11575055, 11705052, 11875020 and 11705151) and National Key Research and Development Program of China (Nos. 2018YFE0309103, 2018YFE0303102, 2017YFE0300405 and 2017YFE0301203).

More Information

Received Date: September 10, 2020
Revised Date: December 21, 2020
Accepted Date: December 23, 2020

Graphical Abstract

Abstract

Abstract

Effect of edge turbulent transport on scrape-off layer (SOL) width has been investigated in Ohmically heated L-mode plasma under limiter configurations on HL-2A tokamak. It has been found that SOL width is doubled when plasma current decreases about 20%. With larger plasma current, E × B shear is stronger and has greater suppression effect on edge turbulent transport. SOL width is larger when power of relative density fluctuation level in the edge region is larger. It is concluded that edge turbulent transport plays a significant role on SOL width. These experimental findings may provide a better understanding and controlling of power exhaust for present and future fusion devices.
- SOL width,
- edge turbulent transport,
- E × B shear,
- turbulence spreading

FullText(HTML)

References (32)

References

[1]	ITER Physics Basis 1999 Nucl. Fusion 39 2391
[2]	Stangeby P C 2000 The Plasma Boundary of Magnetic Fusion Devices (Bristol: Institute of Physics Publishing)
[3]	Goldston R J et al 2012 Nucl. Fusion 52 013009
[4]	Eich T et al 2013 Nucl. Fusion 53 093031
[5]	Connor J W et al 1999 Nucl. Fusion 39 169
[6]	Halpern F D et al 2013 Nucl. Fusion 53 122001
[7]	Myra J R et al 2015 Phys. Plasmas 22 042516
[8]	Fedorczak N et al 2017 Nucl. Mater. Energy 12 838
[9]	Fedorczak N et al 2019 Nucl. Mater. Energy 19 433
[10]	Militello F et al 2013 Plasma Phys. Control. Fusion 55 074010
[11]	Olsen J et al 2018 Plasma Phys. Control. Fusion 60 085018
[12]	Chang C et al 2017 Nucl. Fusion 57 116023
[13]	Chen B et al 2017 Nucl. Fusion 57 116025
[14]	Chen B et al 2018 Phys. Plasmas 25 055905
[15]	Xu X Q et al 2019 Nucl. Fusion 59 126039
[16]	Li Z et al 2019 Nucl. Fusion 59 046014
[17]	Yang Q Q et al 2015 Phys. Plasmas 22 062504
[18]	Grenfell G et al 2019 Nucl. Fusion 59 016018
[19]	Grenfell G et al 2020 Nucl. Fusion 60 014001
[20]	Eich T et al 2020 Nucl. Fusion 60 056016
[21]	Xu M et al 2019 Nucl. Fusion 59 112017
[22]	Wu T et al 2019 Plasma Sci. Technol. 21 125102
[23]	Tsui1 H et al 1992 Rev. Sci. Instrum. 63 4608
[24]	Stangeby P C et al 2010 Nucl. Fusion 50 125003
[25]	Garbet X et al 1994 Nucl. Fusion 34 963
[26]	Gürcan Ö D et al 2005 Phys. Plasmas 12 032303
[27]	Yagi M et al 2006 Plasma Phys. Control. Fusion 48 A409
[28]	Gürcan Ö D et al 2006 Phys. Rev. Lett. 97 024502
[29]	Wang W X et al 2007 Phys. Plasmas 14 072306
[30]	Manz P et al 2015 Phys. Plasmas 22 022308
[31]	Carralero D et al 2015 Phys. Rev. Lett. 115 215002
[32]	Nespoli F et al 2015 J. Nucl. Mater. 463 393–6

[1]	Debing ZHANG, Pengfei ZHAO, Yingfeng XU, Lei YE, Xianmei ZHANG. Gyrokinetic simulations of the kinetic electron effects on the electrostatic instabilities on the ITER baseline scenario[J]. Plasma Science and Technology, 2024, 26(9): 095101. DOI: 10.1088/2058-6272/ad4e78
[2]	Yanhui JIA (贾艳辉), Juanjuan CHEN (陈娟娟), Ning GUO (郭宁), Xinfeng SUN (孙新锋), Chenchen WU (吴辰宸), Tianping ZHANG (张天平). 2D hybrid-PIC simulation of the two and three-grid system of ion thruster[J]. Plasma Science and Technology, 2018, 20(10): 105502. DOI: 10.1088/2058-6272/aace52
[3]	Yunxiao CAO (曹云霄), Zhiqiang WANG (王志强), Jinjun WANG (王进君), Guofeng LI (李国锋). Study of talcum charging status in parallel plate electrostatic separator based on particle trajectory analysis[J]. Plasma Science and Technology, 2018, 20(5): 54019-054019. DOI: 10.1088/2058-6272/aaa195
[4]	Xiaodan ZHANG (张小丹), Xiaoying WANG (王晓英), Chundong HU (胡纯栋), Caichao JIANG (蒋才超), Yahong XIE (谢亚红), Yuanzhe ZHAO (赵远哲). The development of data acquisition and processing application system for RF ion source[J]. Plasma Science and Technology, 2017, 19(7): 75602-075602. DOI: 10.1088/2058-6272/aa61f5
[5]	Congxiang LU (陆从相), Chengwu YI (依成武), Rongjie YI (依蓉婕), Shiwen LIU (刘诗雯). Analysis of the operating parameters of a vortex electrostatic precipitator[J]. Plasma Science and Technology, 2017, 19(2): 25504-025504. DOI: 10.1088/2058-6272/19/2/025504
[6]	LU Kun (陆坤), SONG Yuntao (宋云涛), NIU Erwu (牛二武), ZHOU Tinzhi (周挺志), WANG Zhongwei (王忠伟), CHEN Yonghua (陈永华), ZHU Yinfeng (朱银峰). Evolution of the Design of Cold Mass Support for the ITER Magnet Feeder System[J]. Plasma Science and Technology, 2013, 15(2): 196-200. DOI: 10.1088/1009-0630/15/2/25
[7]	LIAO Min (廖敏), LI Pengyuan (李鹏远), HOU Binglin (侯炳林), YANG Shujuan (杨淑娟), FU Youkun (付猷昆), R. GALLIX. Prototype Engineering Test Platform of ITER Magnet Gravity Support[J]. Plasma Science and Technology, 2013, 15(2): 192-195. DOI: 10.1088/1009-0630/15/2/24
[8]	Hiroyuki TOBARI, Masaki TANIGUCHI, Mieko KASHIWAGI, Masayuki DAIRAKU, Naotaka UMEDA, Haruhiko YAMANAKA, Kazuki TSUCHIDA, Jumpei TAKEMOTO, Kazuhiro WATANABE, Takashi INOUE, Keishi SAKAMOTO. Vacuum Insulation and Achievement of 980 keV, 185 A/m² H^- Ion Beam Acceleration at JAEA for the ITER Neutral Beam Injector[J]. Plasma Science and Technology, 2013, 15(2): 179-183. DOI: 10.1088/1009-0630/15/2/21
[9]	QIU Lilong (邱立龙), ZHUANG Ming (庄明), MAO Jin (毛晋), HU Liangbing (胡良兵), SHENG Linhai (盛林海). Optimization analysis and simulation of the EAST cryogenic system[J]. Plasma Science and Technology, 2012, 14(11): 1030-1034. DOI: 10.1088/1009-0630/14/11/13
[10]	LI Shengtao, ZHANG Tuo, HUANG Qifeng, LI Weiwei, NI Fengyan, LI Jianying. Improvement of Surface Flashover Performance of Al2O3 Ceramics in Vacuum by Adopting A-B-A Insulation System[J]. Plasma Science and Technology, 2011, 13(2): 235-241.